Allow numeric literals to be checked for a decimal point.

src/scanner.cc

Index: src/scanner.cc
diff --git a/src/scanner.cc b/src/scanner.cc
index cf5a69c142de44b9d4e9d36db1aa911337872899..ad7c7d983c5e375afa7ddea2b1e89d6ac2ea89fd 100644
--- a/src/scanner.cc
+++ b/src/scanner.cc
@@ -1425,6 +1425,13 @@ double Scanner::DoubleValue() {
 }
 
 
+bool Scanner::ContainsDot() {
+  DCHECK(is_literal_one_byte());
+  Vector<const uint8_t> str = literal_one_byte_string();
+  return std::find(str.begin(), str.end(), '.') != str.end();
+}
+
+
 int Scanner::FindSymbol(DuplicateFinder* finder, int value) {
   if (is_literal_one_byte()) {
     return finder->AddOneByteSymbol(literal_one_byte_string(), value);